The Department of Transportation's Under Secretary for Policy Derek Kan and Transportation Secretary Elaine Chao accept the the salary check of President Trump.(Photo: Michael Reynolds, epa)

The Department of Transportation just joined the list of agencies to receive a salary donation from President Trump.

One day after rolling out a major infrastructure plan, the White House announced that Trump's fourth-quarter salary of $100,000 will go to rebuilding what Press Secretary Sarah Sanders called "our crumbling infrastructure."

Transportation Secretary Elaine Chao accepted the donation in the press briefing room on behalf of her department.

Trump's donation is only a small fraction of what he wants to spend on infrastructure in the coming years. The White House on Monday announced a proposal to spend $21 billion on infrastructure in fiscal year 2019, which would be a part of a larger spending plan that dedicates $200 billion to infrastructure over the next 10 years.

The spending on federal programs would lead to an investment of $1.5 trillion on roads, bridges, waterways and railways, the White House says.